Re: [PATCH v4 14/36] [media] v4l2-mc: add a function to inherit controls from a pipeline

From	Pavel Machek <pavel@ucw.cz>
Newsgroups	linux.kernel
Subject	Re: [PATCH v4 14/36] [media] v4l2-mc: add a function to inherit controls from a pipeline
Date	2017-03-19 14:30 +0100
Message-ID	<tmJ4d-6cn-9@gated-at.bofh.it> (permalink)
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On Fri 2017-03-17 11:42:03, Russell King - ARM Linux wrote:
> On Tue, Mar 14, 2017 at 08:55:36AM +0100, Hans Verkuil wrote:
> > We're all very driver-development-driven, and userspace gets very little
> > attention in general. So before just throwing in the towel we should take
> > a good look at the reasons why there has been little or no development: is
> > it because of fundamental design defects, or because nobody paid attention
> > to it?
> > 
> > I strongly suspect it is the latter.
> > 
> > In addition, I suspect end-users of these complex devices don't really care
> > about a plugin: they want full control and won't typically use generic
> > applications. If they would need support for that, we'd have seen much more
> > interest. The main reason for having a plugin is to simplify testing and
> > if this is going to be used on cheap hobbyist devkits.
> 
> I think you're looking at it with a programmers hat on, not a users hat.
> 
> Are you really telling me that requiring users to 'su' to root, and then
> use media-ctl to manually configure the capture device is what most
> users "want" ?

If you want to help users, right way is to improve userland support. 

> Hasn't the way technology has moved towards graphical interfaces,
> particularly smart phones, taught us that the vast majority of users
> want is intuitive, easy to use interfaces, and not the command line
> with reams of documentation?

How is it relevant to _kernel_ interfaces?
									Pavel

-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html

Thread

Re: [PATCH v4 14/36] [media] v4l2-mc: add a function to inherit  controls from a pipeline Mauro Carvalho Chehab <mchehab@s-opensource.com> - 2017-03-14 04:50 +0100
  Re: [PATCH v4 14/36] [media] v4l2-mc: add a function to inherit  controls from a pipeline Hans Verkuil <hverkuil@xs4all.nl> - 2017-03-14 09:00 +0100
    Re: [PATCH v4 14/36] [media] v4l2-mc: add a function to inherit  controls from a pipeline Mauro Carvalho Chehab <mchehab@s-opensource.com> - 2017-03-14 11:30 +0100
      media / v4l2-mc: wishlist for complex cameras (was Re: [PATCH v4  14/36] [media] v4l2-mc: add a function to inherit controls from a pipeline) Pavel Machek <pavel@ucw.cz> - 2017-03-14 23:40 +0100
        Re: media / v4l2-mc: wishlist for complex cameras (was Re: [PATCH  v4 14/36] [media] v4l2-mc: add a function to inherit controls from a  pipeline) Mauro Carvalho Chehab <mchehab@s-opensource.com> - 2017-03-15 02:00 +0100
          Re: media / v4l2-mc: wishlist for complex cameras (was Re: [PATCH         v4 14/36] [media] v4l2-mc: add a function to inherit controls from         a pipeline) Philippe De Muyter <phdm@macq.eu> - 2017-03-15 12:10 +0100
            Re: media / v4l2-mc: wishlist for complex cameras (was Re: [PATCH  v4 14/36] [media] v4l2-mc: add a function to inherit controls from a  pipeline) Nicolas Dufresne <nicolas@ndufresne.ca> - 2017-03-15 20:00 +0100
              Re: media / v4l2-mc: wishlist for complex cameras (was Re: [PATCH  v4 14/36] [media] v4l2-mc: add a function to inherit controls from a  pipeline) Philipp Zabel <p.zabel@pengutronix.de> - 2017-03-16 10:30 +0100
                Re: media / v4l2-mc: wishlist for complex cameras (was Re: [PATCH         v4 14/36] [media] v4l2-mc: add a function to inherit controls from         a pipeline) Philippe De Muyter <phdm@macq.eu> - 2017-03-16 11:00 +0100
                Re: media / v4l2-mc: wishlist for complex cameras (was Re: [PATCH  v4 14/36] [media] v4l2-mc: add a function to inherit controls from a  pipeline) Philipp Zabel <p.zabel@pengutronix.de> - 2017-03-16 11:10 +0100
                Re: media / v4l2-mc: wishlist for complex cameras (was Re: [PATCH         v4 14/36] [media] v4l2-mc: add a function to inherit controls from         a pipeline) Philippe De Muyter <phdm@macq.eu> - 2017-03-16 11:30 +0100
          Re: media / v4l2-mc: wishlist for complex cameras (was Re: [PATCH v4  14/36] [media] v4l2-mc: add a function to inherit controls from a pipeline) Pavel Machek <pavel@ucw.cz> - 2017-03-15 19:10 +0100
            Re: media / v4l2-mc: wishlist for complex cameras (was Re: [PATCH  v4 14/36] [media] v4l2-mc: add a function to inherit controls from a  pipeline) Mauro Carvalho Chehab <mchehab@s-opensource.com> - 2017-03-15 21:30 +0100
              Re: media / v4l2-mc: wishlist for complex cameras (was Re: [PATCH v4  14/36] [media] v4l2-mc: add a function to inherit controls from a pipeline) Pavel Machek <pavel@ucw.cz> - 2017-03-16 23:20 +0100
      Re: [PATCH v4 14/36] [media] v4l2-mc: add a function to inherit  controls from a pipeline Hans Verkuil <hverkuil@xs4all.nl> - 2017-03-20 14:30 +0100
        Re: [PATCH v4 14/36] [media] v4l2-mc: add a function to inherit  controls from a pipeline Mauro Carvalho Chehab <mchehab@s-opensource.com> - 2017-03-20 16:50 +0100
          Re: [PATCH v4 14/36] [media] v4l2-mc: add a function to inherit  controls from a pipeline Russell King - ARM Linux <linux@armlinux.org.uk> - 2017-03-20 17:20 +0100
            Re: [PATCH v4 14/36] [media] v4l2-mc: add a function to inherit  controls from a pipeline Mauro Carvalho Chehab <mchehab@s-opensource.com> - 2017-03-20 18:40 +0100
    Re: [PATCH v4 14/36] [media] v4l2-mc: add a function to inherit  controls from a pipeline Russell King - ARM Linux <linux@armlinux.org.uk> - 2017-03-17 12:50 +0100
      Re: [PATCH v4 14/36] [media] v4l2-mc: add a function to inherit  controls from a pipeline Sakari Ailus <sakari.ailus@linux.intel.com> - 2017-03-17 13:00 +0100
        Re: [PATCH v4 14/36] [media] v4l2-mc: add a function to inherit  controls from a pipeline Philipp Zabel <p.zabel@pengutronix.de> - 2017-03-17 15:00 +0100
          Re: [PATCH v4 14/36] [media] v4l2-mc: add a function to inherit  controls from a pipeline Russell King - ARM Linux <linux@armlinux.org.uk> - 2017-03-17 15:50 +0100
            Re: [PATCH v4 14/36] [media] v4l2-mc: add a function to inherit  controls from a pipeline Hans Verkuil <hverkuil@xs4all.nl> - 2017-03-20 14:20 +0100
              Re: [PATCH v4 14/36] [media] v4l2-mc: add a function to inherit  controls from a pipeline Mauro Carvalho Chehab <mchehab@s-opensource.com> - 2017-03-20 16:20 +0100
        Re: [PATCH v4 14/36] [media] v4l2-mc: add a function to inherit  controls from a pipeline Mauro Carvalho Chehab <mchehab@s-opensource.com> - 2017-03-17 15:10 +0100
          Re: [PATCH v4 14/36] [media] v4l2-mc: add a function to inherit  controls from a pipeline Pavel Machek <pavel@ucw.cz> - 2017-03-21 12:20 +0100
        Re: [PATCH v4 14/36] [media] v4l2-mc: add a function to inherit  controls from a pipeline Hans Verkuil <hverkuil@xs4all.nl> - 2017-03-20 12:20 +0100
      Re: [PATCH v4 14/36] [media] v4l2-mc: add a function to inherit  controls from a pipeline Philipp Zabel <p.zabel@pengutronix.de> - 2017-03-17 13:10 +0100
        Re: [PATCH v4 14/36] [media] v4l2-mc: add a function to inherit  controls from a pipeline Russell King - ARM Linux <linux@armlinux.org.uk> - 2017-03-17 13:30 +0100
          Re: [PATCH v4 14/36] [media] v4l2-mc: add a function to inherit  controls from a pipeline Mauro Carvalho Chehab <mchehab@s-opensource.com> - 2017-03-17 19:00 +0100
      Re: [PATCH v4 14/36] [media] v4l2-mc: add a function to inherit  controls from a pipeline Pavel Machek <pavel@ucw.cz> - 2017-03-19 14:30 +0100
    Re: [PATCH v4 14/36] [media] v4l2-mc: add a function to inherit controls from a pipeline Laurent Pinchart <laurent.pinchart@ideasonboard.com> - 2017-03-26 18:50 +0200

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